A 20:00-06:00 curfew has been announced in Miami Beach and will remain in effect for at least 72 hours.
Traffic restrictions are in place during the curfew, while businesses in the busy South Beach area must close.
Miami Beach Mayor Dan Gelber said thousands of tourists had brought "chaos and disorder" to the city.
Republican politicians all over the country have repeated the Great Replacement theory
A century-old racist theory reentered the political discourse around immigration and has become commonplace on the campaign trail as Republicans hope to retake control of Congress in November.
